Telephonic apparatus



I.,,-A. AND Is. IBERLINER.

TELEPHONIO APPARATUS. Arrucmou mzo a412, 1911.

Patented Aug. 24, 1920 N w Y. W 1 xw ll I I I I 1 I ll rsrnon. nnnnmnn, ABRAHAM BERLIENER, AND SAMUEL BERLINER, 0F TORONTO,

ONTARIO, CANADA.

TELEPHONIG APPARATUS.

Specification of Letters Patent.

Patented Aug. 24, 1920.

Application filed March 12, 1917. Serial No. 154,331.

To all whom it may concern.

Be it known that we, ISIDOR BERLINER,

' ABRAHAM BERLINER, and SAMUEL BERLINER,

all of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Telephonic Apparatus, of which the following is the specification.

Our invention relates to improvements in telephonic apparatus and the object of the invention is to devise a simple apparatus adaptable for railroad use whereby telephonic communication can be made to or from a moving train to a central station and from thence to any point desired or between two moving trains on the same track or in the case of a double track. between a train on one track and a train on the other track or between a train on a track to a train or another track at right angles to the first track and whereby communication can be made from a central station either to the engine or to any of the coaches desired forming the train and it consists essentially of the following arrangement and construction of parts as hereinafter more particularly explained by the following specification.

Figure 1, is a diagrammatic view of our telephonic apparatus.

Fig. 2, is an enlarged sectional detail of the means for mounting the wheels of the locomotive upon its axle so as to be insulated therefrom.

Fig. 3, is an enlarged perspective detail of the bearingparts shown in Fig. 2, separated.

In the drawings like characters of reference indicate corresponding parts in the various figures.

1 and 2 indicate the double tracks of a railroad, 1 and 1 being the rails of the track 1 and 2 and 2' the rails of the track 2. Each of the rails 1 1 are divided into sections 3, 4, 5 and 6 by insulating blocks 7 arranged atsuitable distances apart and the rails 2 and 2 divided into sections 3*, 4", 5 and 6 by insulating blocks 7 2 8 and 9 represent two central stations located at any suitable points in the railroad. It will, of

course, be understood'that the stations'are' located at different points of the railroad at any desired distance apart but for the purpose of illustration. only two have been shown.

10 and 11 indicate the main line wires which parallel the track 1 and 12 and 13 line wires which parallel the track 2.

10 and 11 indicate wires extending between station and station. 26 and 26 indicate telephones, the wires 27 and 28 and 27* and 28 of which are connected to the terminals. of the repeating coils 14" and 14*.

wire 10 connects line wire 10 to the section 4 of rail 1". 10 connects line wire 10 to the section 5 of rail 1". 10 connects line wire 10 to the section 5 of rail 1". 10 connects line wire 10 to section 6 of rail 1". 11 connects. line wire 11 to section 3 rail 1. 11

connects line wire 11 to the section 4 of rail 1. 11 connects line wire 11 to the section 4 of rail 1. 11 connects line wire 11 to the section 5 of rail 1. 11 connects line wire 11 to the section 5 ofrail 1. 11 connects linewire 11 to the section 6 of rail 1'.-

41, 41 and 41* indicate one of the axles of locomotives 35", 36 and 37 the axle 41 carrying the wheels 1 and 1 the axle 41 carrying the wheels 1 and 1 and the axle 41 carrying the wheels 1 and 1 It is necessary that the wheels be mounted upon the axles 41, 41 and 41 so as to be insulated therefrom in any desirable manner. We will describe one of these mountings only, the other being similar. In order to accomplish this result we have provided an insulating sleeve 44 (see Fig. 2) secured to the axles by a bolt 45. 46 indicates a metallic sleeve provided .with an enlarged inner end 47 and an externally threaded outer end 48. The sleeve 46 fits upon the sleeve 44 and is secured thereto by set screws 49. 5O indicatesa binding post which is secured to the sleeve 46. 51 indicates a cap provided with an internally threaded portion 52 which is threaded upon the outer end of the sleeve 46. The inner end of the cap 51 is provided with an internal lining 53 located at the inside of the internallythreaded portion 52. 54 indicates an' inner metalv to the section 4 of rail 2*.

which surrounds the axle 41 and is interposed between the outer end of the sleeves 46 and 44 and the inner ends of the cap lining 53 and the inner cap 54. The lining 53 is held in place by means of the screws 56.

12', 12 12 12 12 and 12 and 13', 13 13 13*, 13 and 13 indicate bond wires extending from the line wires 12 and 13. Bond wire 12 connects line 12 to section 3 of rail 2. 12 connects line 12 to the section 4 of the rail 2. 12 connects line 12 to the section 4 of rail 2. 12 connects line 12 to the section 5 of rail 2. 12 connects line 12 to the section 5 of rail 2. 12 connects line 12 to the section 6 of rail 2.

Bond wire 13 connects line 13 to tion 3* of rail 2.

the sec- 13 connects line wire 13 13 connects line wire 13 to the section 4 of rail 2*. 13 connects line 13 to the section 5 of the rail 2*. 13 connects line wire 13 to the section 5 of rail 2*. 13 connects line wire 13 to the section 6* of rail 2*.

10 and 11 indicate lead wires connecting the wires 10 and 11 with the wires 10 and 11 extending between the stations '8'and 9. 10 and 11 indicate lead wires connecting the wires 10 and 11 with wires 10 and 11 leading from the station 9 to the next succeeding station. We do not insist on any particular type of telephone set for our system, but I have illustrated a common or central battery system, each telephone set of the usual subscribers common battery type. Of course local battery sets, with or without associate induction or repeating coils and condensers, may be used without departing from the spirit of our invention. Thus, in each central station, as 8, 9, we have the customary central battery (41, 42) bridged across the branch line through the medium of a retardation coil (14, 14*). The usual interconnecting plugs and signaling apparatus generally employed in a telephone exchange to interconnect subscribers sets, not llustrated, is applicable in each train and in each central station 8, 9.

10 and 10 indicate bridging wires connecting the wires 10 and 12 and 11 and 11 indicate bridging wires connecting the wires 11 and 13.

35 indicates a moving train comprising a locomotive 35*and coach 35 on the track 1. 36 indicates a moving train comprising a locomotive 36 and coach 36 on the same track as train 35 moving either toward or away from the latter. a 37 indicates a moving train on the track 2 moving in the same direction as train 35 and comprising a 37. I

1 and 1 indicate wiresconnected respectively to the wheels 1 and 1 1 and 1 indicate wires forming a continuation of the wires 1 and 1 and extending longitudinally locomotive 37 X and coach of the train 35, the sections of the wires being connected together between the coaches by electric connectors formed by the brackets 37' and arc-shaped portions 38 or by any other means desired.

1 and 1 indicate the wires of the train 36 corresponding to the wires 1 and 1 of the train 35. 4

1 and 1 indicate the wheels of the locomotive 37 1 and 1 indicate the train wires corresponding to the wires 1 and 1 of the train 35.

15 indicates a telephone located in the locomotive of the train 35. 16 indicates a telephone located in a coach of the train. The telephone 15 is bridged across wires and 1 by wires 15 and 15*; the telephone 16 is likewise bridged across wires 1 and 1 by wires 16 and 16 17 indicates a telephone located in the locomotive of the train 36 and bridged across wires 1 and 1 by wires 17 and 17*; 18 indicates a telephone similarly bridged across wires 1 and 1 by wires 18 and 18 19 indicates a telephone located in the locomotive of the train 37 and bridged across wires 1 and 1 by wires 19 and 19*; and 20 indicates a telephone located in the train 37 and similarly bridged across wires 1 and 1 by wires 20 and 20*. v 95 Upon the receiver being removed from the hook the circuit is automatically closed, as is well known of the common battery system. For instance, by removing the receiver of the telephone 26 at station 8 to telephone to the locomotive 35 the central telephone circuit is completed from the battery K through wire 28, retardation coil 14, and telephone 26. The locomotive is then signaled in the usual manner in which a central station signals a subscriber,and, when the receiver is lifted from the hook of the telephone 15, the circuit is completed as follows: battery 41, one winding of retardation coil 14, line 11 line 11, bond wire 11 rail 1, wheel 1 wire 1", wire 1, wire'15", telephone 15, wire 15, wire 1 wire 1", wheel 1 rail 1*, bond wire 10 line 10, line 10, through the other winding of the retardation coil 14 back to the battery 41.

It is obvious that communication may in the same manner be established between any central station and any other telephone set on any coach or locomotive, and also between any two sets on the same train or on 120 different trains. It is believed that a detailed description of each set of connections is unnecessary, as they are clear on the drawings.

It will be seen from this description that 1% our train telephone apparatus permits automatic and direct communication through the wheel and axle from any moving train to any other movingtrain, despatchers oflices, signal towers, way stations, stations, city ex- 130 changes, regular telephone subscribers, or wherever a telephone may be found and vice versa, regardless of the trains speeds, positions, directions or angles, upon the same track, any tracks, or between any two tracks. Direct communication can be held with any moving train from any despatchers oflice, or from any other oflice on the line, or from any house in any city or town, or from one moving train .to another upon the same track, or from one moving train upon a track to another train moving upon another track as in the case of a double-track line, or from one moving train upon one track to another train crossing over at right angles to it. This system also permits telephomng to be' done from one end of atrain to the other or to any part of the train. There are no wearing parts in connection with the reifiisite apparatus, it is so simple that it can and at a relatively low cost. The said train telephone saves a deal of time and trouble in transmitting train orders, or messages to and from passenger, mail or freight trains or the like, and in foggy weather enables the engineer and caboosemen of a train to keep in touch with each other. If connection is made with the regular Bell telephone system, trains can be put in communication with any Bell telephone subscriber.

Our said telephone apparatus permits transmission.through the wheel and axle, without the assistance of any distributing medium. Control of our system difiers in no respect from ordinary telephone operation. Our invention now makes it possible for automatic and direct connections to be made installed on any car in a short time between our train instrument and that of 40 any regular telephone subscriber. Train parallel to said tracks, wires connecting said last named wires with said telephone in said central station, bond wires connecting said track sections with said wires parallel to said tracks, and a battery in said central station for said telephones.

-2. The combination with tracks, of a train having its axles insulated from its wheels, tele bones on said train, a central station having a battery and a telephone set bridged across the same, a pair of wires leading-from said battery to said tracks and a pair of wires leading from said telephone on said train to apair of wheels thereon.

3. The combination with tracks, of trains having axles insulated from their wheels, a telephone set and circuit thereon, whose terminals are connected to a pair of wheels, a central station having a battery therein, and lines bridging said battery across said tracks.

ISIDOR BERLINER. ABRAHAM BERLINER. SAMUEL BERLINER.

Witnesses:

I M. EGAN,

M. Roxana 

